Initial Greasemonkey support

chrome/browser/greasemonkey_master.h

+// Copyright (c) 2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_GREASEMONKEY_MASTER_H__
+#define CHROME_BROWSER_GREASEMONKEY_MASTER_H__
+
+#include <vector>
+
+#include "base/process.h"
+#include "base/scoped_ptr.h"
+#include "base/shared_memory.h"
+
+// Manages a segment of shared memory that contains the Greasemonkey scripts the
+// user has installed.
+class GreasemonkeyMaster {
+ public:
+  GreasemonkeyMaster()
+      : shared_memory_serial_(0) {}
+
+  // Reloads scripts from disk into a new chunk of shared memory and notifies
+  // renderers.
+  bool UpdateScripts();
+
+  // Creates a handle to the shared memory that can be used in the specified
+  // process.
+  bool ShareToProcess(ProcessHandle process, SharedMemoryHandle* new_handle);
+
+  // Gets the segment of shared memory for the scripts.
+  SharedMemory* GetSharedMemory() const {
+    return shared_memory_.get();
+  }
+
+ private:
+  // Contains the scripts that were found the last time UpdateScripts() was
+  // called.
+  scoped_ptr<SharedMemory> shared_memory_;
+
+  // A counter that is incremented each time a new shared memory segment is
+  // created. This is used to uniquely identify segments created at different
+  // times by this class.
+  int shared_memory_serial_;
+
+  DISALLOW_COPY_AND_ASSIGN(GreasemonkeyMaster);
+};
+
+#endif // CHROME_BROWSER_GREASEMONKEY_MASTER_H__